Cage for reducing-machines.



-M. F. WiLLIAMS. CAGE ron REDUCING MACHINES. APPLICATION FILED JAN. 31. 1918.

1,275,347. Patented Aug. 13, 1918.

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oAeEIro t nEnuoIne-MnoIIINEsf To all whom may concern:

Be it known that I, MILTON new and useful Improvement in Cages for Reducing-Machines, of which I the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a cage or screen for material reducing or pulverizing machines and particularly those machines utilizing hinged or pivoted hammers or'beaters, and which latter are carried by a shaft which rotates at a relatively high speed.

The principal object of my invention is to provide a cage or screen which is comparatively strong, rigid and durable and the parts of said cage or screen including the framework being made up of ordinary and readily obtainable structural shapes which can be easily worked and assembled to produce the finished cage, thereby materially reducing the cost of manufacture.

A further object of my invention is to provide a cage or screen which requires no machining and very little, if any, smithwork in its manufacture.

It will be understood that cages or screens utilized in connection with reducing machines employing pivoted hammers or beaters are curved lengthwise or formed-on the arc of a circle which is concentric with the shaft carrying the hammers or heaters, and it is one of the objects of my invention to construct an arcuate cage or screen so that it will be effective in resisting strains and forces which it may be subj eoted to while in service and which may tend to distort or bend it to such a degree as to render it unfit for service.

With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the accompanying drawings, in which- Figure '1 is a side elevational view of a cage or screen constructed in accordance with my invention.

Specification bf Letters Patent.

F. WILLIAMS, a citizen of the UnitedStates, TQSldlDg at St. Louis, Mlssourl, have invented a certam rateiitea Aug. is, 1918;

Application filed. January 31. 1918. Serial No. 214,673.

Fig. 2' is a plan view'of theside portion ofmy-improved cage. v

- Fig. 3 is. a perspective view of one ofthe corners ofithe cage. f Y 5 ,Fig. 4: is a rear elevational view of one-of the corners ofthecage. Fig. 5 isa sectionalview'taken approxi-- mately on the line 5-5 of Fig. 1.

7 Referring. by numerals to the accompanying drawings which illustrate a practical embodiment of my invention, 10 designates a reticulated member, preferably a metal plate or sheet having holes punched therein, said plate being bent into arcuate form.

Positioned on the side edges of this reti-- culated plate and against the inner face thereof are rails or bars 11, the outer portions of which extend beyond the edges of said plate. outwardly projecting portions of the rails 11 at the ends thereof and at suitable points intermediate said ends by means of rivets 12 or like fastening devices are small angle plates or L-shaped members 13, the inner.

Secured to the undersides of the tening devices to the outwardly projecting legs of the angle members 18 are transversely disposed bars 15 which lie directly against the outer face of the reticulated plate 10. If desired, these transversely disposed bars and reticulated plate may be secured to each other in any suitable manner, and likewise the side bars 11 may be secured to said plate, although in ordinary practice, this is not found necessary.

The angle members 13 in addition ,to serving as spacing means between the bars 11 and 15, act as stop lugs for retaining thereticulated plate in proper position between the side bars 11 and prevent any lateral movement between these parts, and further, said angle members serve as seats for the rivets or like means utilized for connecting the side bars 11 and transverse bars 15.

A cage of my improved construction is comparatively simple, can be easily and cheaply manufactured inasmuch as'they are made up of ordinary shapes and require no machining and very little smithwork, and

said cages can be made in various sizes and they are particularly designed to resist service shocks, strains and Wear.

It Willbe readily understood that minor changes in the size, form and construction of the various parts of my improved cage may be made and substituted for those herein shown and described, Without departing from the spirit of my invention, the scope of Which is set forth in the appended claim.

I claim:

In a cage for reducing machines having revolving beaters or hammers, the combination With a foraminous plate curved throughout its length, of a supporting frame for said plate, saidframe comprising a pair of curved bars arranged on the inner face of the plate at the side edges thereof, portions of Which bars project beyond the edges of Copiesof this patent may be obtained for five cents each, by addressing the Commissioner Washington, D. G.

the plate, angle brackets secured to the undersidesof said curved bars and spaced at substantially equal distances apart, the in ner edges of the inner portions of Which angle brackets bear directly against the side edges of the for'aminous plate, a series of transversely disposed frame reinforcing bars applied to the underside of the foraminous plate and bearing directly against the underface thereof, the ends of Which transversely disposed bars bear directly against both legs of the angle brackets, and fastening means seated in the outwardly projecting portions of said angle brackets and in the endsof the transversely disposed bars.

In testimony whereof I hereunto alfix my signature this 26th day of January, 1918.

MILTON F. WILLIAMS.

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